Abstract: Provided is a light source correction method for low-light detection, which relates to the technical field of remote detection. The light source correction method includes following steps: S1: determining whether brightness of a light source exceeds a predetermined value, and if the brightness of the light source exceeds the predetermined value, performing step S2; or if the brightness of the light source does not exceed the predetermined value, performing no operation; S2: driving a shielding plate located in front of a luminous flux detection board to rotate around a rotating shaft to obtain a luminous flux intensity on the luminous flux detection board; and S3: drawing a curve graph showing that the luminous flux intensity varies with a rotation position of the shielding plate, and calculating position information of the light source.

Abstract: A safety monitoring method for a freight elevator includes: S1: recording a minimum height and a maximum height of all floor doors of a freight elevator; S2: determining whether there are goods that have a height greater than the maximum height and enter the elevator, and if so, directly performing step S6; otherwise performing step S3; S3: determining whether there are goods that have a height greater than the minimum height and enter the elevator, and if so, obtaining the height of the goods and performing step S4; otherwise performing no operation; S4: when the elevator stops, obtaining a height of a floor door on a current floor; S5: determining whether the height of the floor door on the current floor is less than the height of the goods, and if so, performing step the S6; otherwise performing no operation; and S6: issuing an alarm when an elevator door opens.

Abstract: Provided is a water surface and underwater detection device, which relates to the technical field of ocean detection. The water surface and underwater detection device includes a fixed column, an optical plate disposed above the fixed column, and a detection portion disposed below the fixed column. The fixed column is provided with an upper detection rod connected to the optical plate and a lower detection rod connected to the detection portion. The upper detection rod is connected to the optical plate through a telescopic rod, such that the optical plate is located at a horizontal plane. A detection head is disposed on a side of the detection portion close to the optical plate. This application can perform water surface detection and underwater detection by using the optical plate that moves up and down and the axially rotating detection portion.

Abstract: Provided is a method for detecting a low-latitude air vehicle. The method includes following steps: S1: setting up a fixed column and a movable column, and disposing a detection antenna; S2: determining whether two detection antennas on the fixed column simultaneously detect a target; and if the two detection antennas on the fixed column simultaneously detect the target, performing step S3; or if the two detection antennas on the fixed column do not simultaneously detect the target, performing no operation; S3: determining in real time whether at least one of the two detection antennas loses the detected target; and if the at least one of the two detection antennas loses the detected target, performing step S4; otherwise, adopting the two detection antennas for detection; and S4: driving a rotating shaft to make the movable column rotate; and adopting four detection antennas for detection.

Abstract: One embodiment described herein provides a system and method for adjusting the relay state of nodes in a wireless network. During operation, the system can obtain relay-state information associated with a plurality of neighboring nodes of a respective node in the wireless network. The system can identify, among the plurality of neighboring nodes, a set of relay neighbors capable of relaying messages based on the obtained relay-state information and determine a connectivity status of the set of relay neighbors. The system can then determine an expected relay state of the respective node based on a count and the connectivity status of the set of relay neighbors and can adjust a relay state of the respective node based on the expected relay state.

Abstract: Provided in the example embodiments are a communication method employing a Bluetooth network, and a node and a communication system applying the same. The communication method applicable to a Bluetooth end node includes: if there is a relay node in neighboring Bluetooth nodes, performing data communication via the relay node; and if there is no relay node in the neighboring Bluetooth nodes, sending a relay configuration request message by broadcast to request a gateway node to select and configure a relay node from the neighboring Bluetooth nodes. The communication method employing a Bluetooth network, and the node and the communication system applying the same provided in the example embodiments can flexibly configure a minimum number of relay nodes according to an actual network topology, thereby preventing the problem in which many relay nodes in a network result in forwarding of a large number of broadcast packets and consequently affect the throughput of the network.

Abstract: Embodiments of the disclosure provide a Bluetooth network, a communication method, an apparatus, and a storage medium thereof. In the embodiments of the disclosure, a Bluetooth network comprises a Bluetooth node configured with a forwarding capability and serving as a non-leaf node, and a Bluetooth node functioning in a Bluetooth advertising mode to serve as a leaf node. Each leaf node is connected to at least one of one or more non-leaf nodes. Via the forwarding capability of the non-leaf node, the leaf node communicates with other leaf nodes or non-leaf nodes not within its signal coverage, thereby extending a communication range of a Bluetooth node.

Abstract: The disclosure provides a key generation method and apparatus. The key generation method comprises: encrypting a first key factor generated by a first device with an initial key, and sending the encrypted first key factor to a second device through a first secure channel, wherein the initial key is a key preset for the first device and the second device; receiving, through the first secure channel, a second key factor encrypted with the initial key, wherein the second key factor is generated by the second device; decrypting the second key factor encrypted with the initial key and received through the first secure channel, so as to obtain the second key factor; and generating a shared key between the first device and the second device according to the first key factor and the second key factor.

Abstract: One embodiment described herein provides a system and method for adjusting the relay state of nodes in a wireless network. During operation, the system can obtain relay-state information associated with a plurality of neighboring nodes of a respective node in the wireless network. The system can identify, among the plurality of neighboring nodes, a set of relay neighbors capable of relaying messages based on the obtained relay-state information and determine a connectivity status of the set of relay neighbors. The system can then determine an expected relay state of the respective node based on a count and the connectivity status of the set of relay neighbors and can adjust a relay state of the respective node based on the expected relay state.

Abstract: Embodiments of the disclosure provide a Bluetooth network, a communication method, an apparatus, and a storage medium thereof. In the embodiments of the disclosure, a Bluetooth network comprises a Bluetooth node configured with a forwarding capability and serving as a non-leaf node, and a Bluetooth node functioning in a Bluetooth advertising mode to serve as a leaf node. Each leaf node is connected to at least one of one or more non-leaf nodes. Via the forwarding capability of the non-leaf node, the leaf node communicates with other leaf nodes or non-leaf nodes not within its signal coverage, thereby extending a communication range of a Bluetooth node.

Abstract: A verification information update method includes: receiving a first request message for binding to a smart device from a terminal device, the first request message carrying a universally unique identifier (UUID) of the smart device; determining a binding relationship between the UUID and a user identifier of the terminal device, and generating a session random number corresponding to the binding relationship; and generating a new verification number and a new verification password of the smart device based on the session random number. The technical solution of the present disclosure implement dynamic update of verification information during a session, thus increasing the difficulty in monitoring the verification information during update.

Abstract: The disclosure provides a key generation method and apparatus. The key generation method comprises: encrypting a first key factor generated by a first device with an initial key, and sending the encrypted first key factor to a second device through a first secure channel, wherein the initial key is a key preset for the first device and the second device; receiving, through the first secure channel, a second key factor encrypted with the initial key, wherein the second key factor is generated by the second device; decrypting the second key factor encrypted with the initial key and received through the first secure channel, so as to obtain the second key factor; and generating a shared key between the first device and the second device according to the first key factor and the second key factor.

Abstract: The disclosure provides a key generation method and apparatus. The key generation method comprises: encrypting a first key factor generated by a first device with an initial key, and sending the encrypted first key factor to a second device through a first secure channel, wherein the initial key is a key preset for the first device and the second device; receiving, through the first secure channel, a second key factor encrypted with the initial key, wherein the second key factor is generated by the second device; decrypting the second key factor encrypted with the initial key and received through the first secure channel, so as to obtain the second key factor; and generating a shared key between the first device and the second device according to the first key factor and the second key factor.

Abstract: Disclosed herein are methods, apparatuses, and systems for remotely accessing cloud applications. In one embodiment, the method comprises receiving an access request of a requester, sent by a cloud server, requesting being accessed by a controlling party; establishing a secure channel with the cloud server based on the access request of the requester, sent by the cloud server, requesting being accessed by the controlling party; receiving, via the safety channel, a login key generated based on the access request of the requester sent by the cloud server; generating, based on the login key, a login request for logging into the requester and sending the login request to the cloud server; receiving mode information of a login success returned by the cloud server after the cloud server verifies the login request; and receiving current mode information of the requester pushed by the cloud server, and entering a remote access mode for the requester.

Abstract: The disclosure provides a key generation method and apparatus. The key generation method comprises: encrypting a first key factor generated by a first device with an initial key, and sending the encrypted first key factor to a second device through a first secure channel, wherein the initial key is a key preset for the first device and the second device; receiving, through the first secure channel, a second key factor encrypted with the initial key, wherein the second key factor is generated by the second device; decrypting the second key factor encrypted with the initial key and received through the first secure channel, so as to obtain the second key factor; and generating a shared key between the first device and the second device according to the first key factor and the second key factor.

Abstract: A verification information update method includes: receiving a first request message for binding to a smart device from a terminal device, the first request message carrying a universally unique identifier (UUID) of the smart device; determining a binding relationship between the UUID and a user identifier of the terminal device, and generating a session random number corresponding to the binding relationship; and generating a new verification number and a new verification password of the smart device based on the session random number. The technical solution of the present disclosure implement dynamic update of verification information during a session, thus increasing the difficulty in monitoring the verification information during update.

Abstract: Disclosed herein are methods, apparatuses, and systems for remotely accessing cloud applications. In one embodiment, the method comprises receiving an access request of a requester, sent by a cloud server, requesting being accessed by a controlling party; establishing a secure channel with the cloud server based on the access request of the requester, sent by the cloud server, requesting being accessed by the controlling party; receiving, via the safety channel, a login key generated based on the access request of the requester sent by the cloud server; generating, based on the login key, a login request for logging into the requester and sending the login request to the cloud server; receiving mode information of a login success returned by the cloud server after the cloud server verifies the login request; and receiving current mode information of the requester pushed by the cloud server, and entering a remote access mode for the requester.

Abstract: In a message processing method and device described in the disclosed embodiments, a sender sends to a receiver a message in a read-only mode; the receiver displays content of the message in the read-only mode to a user; because the message is in the read-only mode, the receiver cannot store the message; the sender clears the content of the message and sends to the receiver the message with null content; the receiver again receives the message and updates displayed content of the message with content of the most recently received message; because the content of the message is already cleared at the sender, the content displayed at the receiver is also empty, thereby achieving the deletion of the message content. It can be appreciated that through the disclosed methods and devices, it can be guaranteed that both the message content being deleted at the receiver and the message not being stored by the receiver, thereby reducing the risk that the message content may be retained by the receiver.

Abstract: Disclosed are methods, apparatuses, and systems for terminal remote assistance. In one embodiment, the method comprises: sending, by a task server to a second terminal, a current status of a first terminal, wherein the current status is a status of a local application, located in the first terminal, in need of an assistance operation performed by the second terminal; receiving, by the task server, an assistance operation instruction, sent by the second terminal, that corresponds to the current status; performing, by the task server, the assistance operation on the current status based on the assistance operation instruction to obtain assistance operation results; and sending, by the task server to the first terminal, the assistance operation results. The disclosed embodiments solve the technical problem of a heavier burden caused by a terminal device having to consume its own operating resources to achieve the goal of remote assistance.